A circuit which enables a user to linearly control the speed of a connected motor by rotating an attached potentiometer is called a motor speed controller circuit. 5 easy to build speed controller circuits for DC motors are presented here, first one using MOSFET IRF540, second one using IC 555, the third concept with IC […]
Motor Controller
Simple Gate Open/Close Controller Circuit
The simple gate open and close controller circuit is designed to operate the gate through a couple of push buttons manually, it can be also modified for implementing the activation through a remote control. How it Works Referring to the shown, simple gate open, close controller circuit below, we can witness a rather straightforward configuration, […]
Easy H-Bridge MOSFET Driver Module for Inverters and Motors
If you are wondering if there’s an easy way to implement an H-bridge driver circuit without using the complex bootstrapping stage, the following idea will precisely solve your query. In this article I have explained how to build an universal full-bridge or H-bridge MOSFET driver circuit, using P-channel and N-channel MOSFETs, which can be used […]
PIR Ceiling Fan Controller Circuit
In this post I have explained a simple automatic PIR controlled ceiling fan circuit for school college use, which responds and switches ON only in the presence of a human (students) in the classroom. The idea was requested by Mr. Souren Bhattacharya. Technical Specifications I am, souren bhattacharya, a high school teacher in west bengal. […]
Washing Machine Motor Agitator Timer Circuit
The article details a circuit design for controlling a washing machine motor agitator through a preset time sequence which also includes an alternate reversing of the motor rotation. The circuit was requested by Mr. E.Rama Murthy. Technical Specifications I am having old washing machine which is good working till now. Of late, its PCB has […]
Water/Coffee Dispenser Motor Circuit
In this article I have explained a protection circuit which may be used for preventing a “dry run” situation in mini coffee dispenser motor pumps, by sensing the slight difference in its wet and dry current consumption levels. The idea was requested by Mr. Ken Adler. Technical Specifications I read with great interest your post titled, […]